tolong pilis nomor 8 samapi 10

8. p = 3.lebar
p = 3.4
= 12
K = 2×(p+l)
= 2×(12+4)
= 2×16
= 32 cm 2 ( pangkat 2)

9. K. Persegi = s × 4
32 cm = s × 4
s = 32/4
s = 8 cm

10. K. Persegi = 6 × 4
= 24 cm
K. Persegi panjang = 2(8+5)
= 2.13
= 26 cm
K. Bangun datar tersebut = 26+24
= 50 cm ( pangkat 2 )

8).p = 3.lebar
p=3.4
= 12 cm
keliling = 2×(p+l)
= 2×(12+4)
= 2×16
= 32 cm²
9)keliling persegi = s × 4
32 cm= s × 4
s = 32/4
s = 8 cm
10)keliling persegi = 6 × 4
= 24 cm
keliling persegi panjang = 2(8+5)
=2.13
=26 cm
keliling bangun datar tsb = 24 + 26
= 50 cm²